Component supply device

ABSTRACT

A component supply device includes an introduction sprocket that rotates with an outer peripheral pin engaged with a feed hole of a carrier tape on a conveyance path, thereby conveying the carrier tape, and a wheel that has a plurality of recesses on an outer periphery, and receives the outer peripheral pin of the rotating introduction sprocket by the recess to rotate in accordance with rotation of the introduction sprocket. A contact surface of the outer peripheral pin contacting an inner surface of the recess and a contacted surface with which the outer peripheral pin contacts out of the inner surface of the recess are both formed of flat surfaces, and the contact surface and the contacted surface come into line contact with each other.

BACKGROUND 1. Technical Field

The present disclosure relates to a component supply device that conveysa component supply tape storing a component and supplies the componentto a component supply position.

2. Description of the Related Art

Conventionally, a component mounting device that mounts a component on asubstrate is known. As a component supply device that supplies acomponent to a component mounting device, often used is a tape feederusing a carrier tape (component supply tape) formed by sticking a covertape to a base tape that stores a component. A tape feeder includes, ona frame having a conveyance path for a carrier tape, a sprocket thatconveys the carrier tape on the conveyance path, and a peeling part thatpeels off a cover tape from a base tape of the carrier tape conveyed bythe sprocket.

Among such component supply devices, from a viewpoint of reduction inthe number of components, and the like, there is known, as aconfiguration for driving a certain gear, a configuration in which thetarget gear is driven using a sprocket for conveying a carrier tapeinstead of a gear (e.g., PTL 1 below). In this case, a disk-shapedmember is provided concentrically with the target gear to be driven, anda pin of a rotating sprocket is brought into contact with a recessprovided in an outer peripheral portion of the disk-shaped member totransmit rotation of the sprocket to the target gear.

CITATION LIST Patent Literature

PTL 1: Unexamined Japanese Patent Publication No. 2021-125625

SUMMARY

However, since a pin of a sprocket conventionally has a conical shapedue to processability and ease of releasing of a carrier tape from afeed hole, when the pin of the sprocket contacts a recess of adisk-shaped member, the pin comes into point contact with an innersurface of the recess (i.e., locally abuts) to cause wear, which mightcause deterioration in durability of the pin.

Therefore, an object of the present disclosure is to provide a componentsupply device enabling reduction in wear of a pin of a sprocket thattransmits rotation to a wheel.

A component supply device of the present disclosure is a componentsupply device that supplies a component to a component supply positionusing a component supply tape including a base tape and a cover tape,the base tape having a storage part storing the component, and the covertape being attached to the base tape to cover the storage part, thecomponent supply device including: a frame including a conveyance pathfor the component supply tape; a sprocket that is provided in the frame,includes a pin, and rotates with the pin engaged with a feed hole of thecomponent supply tape on the conveyance path to convey the componentsupply tape; and a disk-shaped member that rotates in accordance withrotation of the sprocket when the pin of the rotating sprocket comesinto contact with a recess provided on an outer periphery of thedisk-shaped member.

According to the present disclosure, it is possible to reduce wear of apin of a sprocket that transmits rotation to a wheel.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a side view illustrating a schematic configuration of acomponent mounting device including a tape feeder according to oneexemplary embodiment of the present disclosure;

FIG. 2 is a perspective view illustrating a carrier tape used in thetape feeder according to the exemplary embodiment of the presentdisclosure together with a reel;

FIG. 3 is a perspective view of a part of the carrier tape used in thetape feeder according to the exemplary embodiment of the presentdisclosure;

FIG. 4 is a side view of the tape feeder according to the exemplaryembodiment of the present disclosure;

FIG. 5 is a side view of a part of the tape feeder according to theexemplary embodiment of the present disclosure;

FIG. 6 is a side view of a part of the tape feeder according to theexemplary embodiment of the present disclosure;

FIG. 7 is a side view of a part of the tape feeder according to theexemplary embodiment of the present disclosure;

FIG. 8 is a perspective view of a part of the tape feeder according tothe exemplary embodiment of the present disclosure;

Part (a) of FIG. 9 is a plan view of a part of the tape feeder accordingto the exemplary embodiment of the present disclosure, and part (b) ofFIG. 9 is a side view of a part of the tape feeder according to theexemplary embodiment of the present disclosure;

FIG. 10A is a side view of a neighborhood of a portion where an outerperipheral pin of an introduction sprocket included in the tape feederand a recess of a wheel contact each other in the exemplary embodimentof the present disclosure;

FIG. 10B is a partial cross-sectional perspective view of a neighborhoodof a portion where an outer peripheral pin of an introduction sprocketincluded in the tape feeder and a recess of a wheel contact each otherin the exemplary embodiment of the present disclosure;

FIG. 11 is a cross-sectional perspective view of the neighborhood of theportion where the outer peripheral pin of the introduction sprocketincluded in the tape feeder and the recess of the wheel contact eachother in the exemplary embodiment of the present disclosure;

FIG. 12A, FIG. 12B, and FIG. 12C are side views of the neighborhood ofthe portion where the outer peripheral pin of the introduction sprocketincluded in the tape feeder and the recess of the wheel contact eachother in the exemplary embodiment of the present disclosure;

FIG. 13 is a cross-sectional perspective view of a part of the tapefeeder according to the exemplary embodiment of the present disclosure;

FIG. 14A and FIG. 14B are perspective views each illustrating a secondguide member included in the tape feeder according to the exemplaryembodiment of the present disclosure together with a peeling gear;

FIG. 15 is a cross-sectional side view of a part of the tape feederaccording to the exemplary embodiment of the present disclosure;

FIG. 16A and FIG. 16B are views each for explaining a procedure forconveying the carrier tape by the tape feeder according to the exemplaryembodiment of the present disclosure;

FIG. 17A and FIG. 17B are views each for explaining a procedure forconveying the carrier tape by the tape feeder according to the exemplaryembodiment of the present disclosure;

FIG. 18A and FIG. 18B are views each for explaining a procedure forconveying the carrier tape by the tape feeder according to the exemplaryembodiment of the present disclosure; and

FIG. 19A and FIG. 19B are views each for explaining a procedure forconveying the carrier tape by the tape feeder according to the exemplaryembodiment of the present disclosure.

DETAILED DESCRIPTIONS

In the following, an exemplary embodiment of the present disclosure willbe described with reference to the drawings. FIG. 1 shows componentmounting device 1 according to the exemplary embodiment of the presentdisclosure. Component mounting device 1 is a device that repeatedlyexecutes component mounting work of horizontally conveying substrate KBfed from an upstream process side, positioning substrate KB at a workposition, mounting component BH on substrate KB, and carrying componentBH out to a downstream process side.

In FIG. 1 , component mounting device 1 includes base 11, substrateconveyance unit 12, tape feeder 13, mounting head 14, and head movingmechanism 15. In the present exemplary embodiment, for convenience ofdescription, a direction in which substrate KB is conveyed is defined asX direction (a left-right direction as viewed from operator OP), and ahorizontal direction orthogonal to X direction is defined as Y direction(a front-rear direction as viewed from operator OP). An up-downdirection is defined as Z direction.

In FIG. 1 , substrate conveyance unit 12 includes a pair of beltconveyors 12 a extending on base 11 in X direction. Substrate conveyanceunit 12 conveys substrate KB in X direction and positions substrate KBat the work position by simultaneously causing the pair of beltconveyors 12 a to work. Feeder carriage FD is coupled to base 11, andtape feeder 13 is detachably attached to feeder base FB provided at anupper portion of feeder carriage FD. A plurality of tape feeders 13 canbe attached to feeder base FB side by side in X direction.

Tape feeder 13 is a component supply unit (component supply device) incomponent mounting device 1, and conveys carrier tape CT as a componentsupply tape storing component BH to supply component BH to componentsupply position 13P (FIG. 1 ). As illustrated in FIG. 2 and FIG. 3 (FIG.3 shows region AE1 in FIG. 2 ), carrier tape CT is configured to includebase tape BT and cover tape TT stuck to an upper surface of base tapeBT. Carrier tape CT is supplied while being wound around reel RL (FIG. 2).

Base tape BT has a plurality of pockets PK arranged in a line in alongitudinal direction. Each pocket PK stores component BH. Cover tapeTT prevents component BH from falling off from each pocket PK in a stateof being stuck to base tape BT. Base tape BT has formed a plurality offeed holes KH that are arranged in a line in a longitudinal direction ofcarrier tape CT in parallel with a row of pockets PK (FIG. 3 ).

As described above, in the present exemplary embodiment, carrier tape CTis configured to have base tape BT having pocket PK as a storage part inwhich component BH is stored, and cover tape TT stuck to base tape BT tocover pocket PK.

In FIG. 1 , mounting head 14 includes a plurality of nozzles 14Nextending downward. Head moving mechanism 15 includes, for example, anXY robot, and moves mounting head 14 in a horizontal plane. Mountinghead 14 sucks component BH to a lower end of nozzle 14N to pick up thecomponent, the component having been supplied to component supplyposition 13P by tape feeder 13. Thus, in the present exemplaryembodiment, tape feeder 13 is configured to supply component BH tocomponent mounting device 1 using carrier tape CT as the componentsupply tape.

In FIG. 1 , component mounting device 1 includes control device 16.Control device 16 controls each operation of substrate conveyance unit12, each tape feeder 13, mounting head 14, and head moving mechanism 15.Manipulation panel PN is connected to control device 16. Operator OP canperform input operation to control device 16 through manipulation panelPN.

When component mounting device 1 performs the component mounting work,control device 16 first causes substrate conveyance unit 12 to work,thereby receiving substrate KB fed from the upstream process side andconveying substrate KB to the work position to position the substrate.Then, after substrate KB is positioned, the control device causes headmoving mechanism 15 to work, thereby causing mounting head 14 torepeatedly perform component moving operation while causing tape feeder13 to work to supply component BH to component supply position 13P. Thecomponent moving operation includes operation of causing nozzle 14N tosuck component BH supplied by tape feeder 13, and operation of mountingcomponent BH sucked by nozzle 14N onto substrate KB.

After causing mounting head 14 to repeatedly perform the componentmoving operation to mount all components BH to be mounted on substrateKB, control device 16 causes substrate conveyance unit 12 to work tocarry out substrate KB to the downstream process side. As a result, thecomponent mounting work per one substrate KB is completed.

Next, a configuration and operation of tape feeder 13 will be described.As illustrated in FIG. 4 , tape feeder 13 includes frame 21, tapedraw-in mechanism 22, conveyance mechanism 23, cover member 24, covertape peeling mechanism 25, manipulation and display part 26, andcontroller 27.

Frame 21 of tape feeder 13 is attached to feeder base FB of feedercarriage FD. In a state where tape feeder 13 (frame 21) is attached tofeeder base FB, a width direction of frame 21 coincides with Xdirection, and the front-rear direction coincides with Y direction. Ofends of frame 21 in Y direction, a side close to substrate conveyanceunit 12 is referred to as a front end side, and a side away fromsubstrate conveyance unit 12 is referred to as a rear end side.

In FIG. 4 , conveyance path 21L of carrier tape CT extending from therear end side to the front end side of frame 21 is provided in frame 21.Conveyance path 21L has tape inlet 21K (an introduction position ofcarrier tape CT) opened at the rear end of frame 21, and tape outlet 21Topened at the front end side of frame 21.

Carrier tape CT is inserted from tape inlet 21K and conveyed so as to beejected from tape outlet 21T. Hereinafter, a side of frame 21 on whichtape inlet 21K is provided is referred to as an “upstream side”, and aside on which tape outlet 21T is provided is referred to as “downstreamside”.

In FIG. 4 , conveyance path 21L is formed as a whole in a routeextending from an upstream side lower portion toward a downstream sideupper portion in frame 21. Specifically, conveyance path 21L is formedin a route extending substantially along Y direction from tape inlet 21Ktoward the downstream side, extending obliquely upward from anintermediate portion of frame 21 toward the downstream side, and thenextending further toward the downstream side in a state of being exposedat an upper portion of frame 21 to reach tape outlet 21T.

In FIG. 4 , a hollow region is formed on the upstream side of frame 21.As will be described later, the hollow region is a housing part 21S inwhich cover tape TT peeled off from base tape BT is housed.

In FIG. 4 , a coupling part 21R having a shape extending in Y directionis provided in a downstream side lower portion of frame 21. Tape feeder13 is coupled to feeder base FB (i.e., to feeder carriage FD) byinsertion of coupling part 21R into a slot (not illustrated) provided infeeder base FB.

In FIG. 4 , tape draw-in mechanism 22 includes insertion detector 22 a,draw-in sprocket 22 b, and draw-in motor 22 c. Insertion detector 22 ais provided at the upstream side lower portion of frame 21, and detectsa head portion of carrier tape CT inserted into conveyance path 21L fromtape inlet 21K.

Draw-in sprocket 22 b, which is also located at the upstream side lowerportion of frame 21, is rotatably provided around a shaft along Xdirection (i.e., in a direction along YZ plane). Draw-in sprocket 22 bhas a plurality of pins (not illustrated) on an outer peripheral portionthereof, and a lowermost pin among the plurality of pins is located inconveyance path 21L.

When insertion detector 22 a detects the head portion of carrier tape CTbeing inserted into tape inlet 21K, draw-in motor 22 c rotates draw-insprocket 22 b. At this time, draw-in sprocket 22 b is rotated in adirection (arrow Ra in FIG. 4 ) in which a pin on a lower end side movestoward the downstream side.

When draw-in sprocket 22 b rotates in the direction in which the pin onthe lower end side moves toward the downstream side, the lowermost pinof draw-in sprocket 22 b is engaged with feed hole KH of carrier tape CTin conveyance path 21L, and carrier tape CT is conveyed in a downstreamdirection (a direction toward the downstream side, i.e., a directionfrom a left side toward a right side of a sheet of FIG. 4 ). As aresult, carrier tape CT is drawn into frame 21, and the head portion ofcarrier tape CT advances on conveyance path 21L toward the downstreamside.

In FIG. 4 , conveyance mechanism 23 is provided on the downstream sideof frame 21. Conveyance mechanism 23 is a mechanism part that receivescarrier tape CT drawn into conveyance path 21L by tape draw-in mechanism22 and conveys carrier tape CT toward component supply position 13P. Asdescribed above, in the present exemplary embodiment, tape feeder 13 isconfigured to include conveyance path 21L leading from tape inlet 21K,which is an introduction position of carrier tape CT, to componentsupply position 13P, and conveyance mechanism 23 that conveys carriertape CT on conveyance path 21L to component supply position 13P.

In FIG. 5 (FIG. 5 is an enlarged view of region AE2 in FIG. 4 ),conveyance mechanism 23 includes drive motor 31, drive gear 32,reduction gear 33, first intermediate gear 34, introduction sprocket 35,positioning sprocket 36, second intermediate gear 37, and ejectionsprocket 38. Drive motor 31 is installed at the downstream side lowerportion of frame 21, and rotates drive gear 32 around a shaft along Xdirection. Drive motor 31 is capable of rotating drive gear 32 in eitherof forward and reverse directions.

Reduction gear 33 and first intermediate gear 34 are each rotatablyprovided around a shaft along X direction. Reduction gear 33 meshes withdrive gear 32 (FIG. 5 ). Reduction gear 33 is formed integrally withsmall-diameter gear 33T provided concentrically with the reduction gear,and small-diameter gear 33T meshes with first intermediate gear 34 (FIG.5 ). Reduction gear 33 decelerates rotation of drive motor 31, increasesa torque generated by drive motor 31, and transmits the increased torqueto first intermediate gear 34.

In FIG. 5 , introduction sprocket 35 is located above an upstream sideof first intermediate gear 34 and below an obliquely upward extendingpart of an intermediate portion of conveyance path 21L. Introductionsprocket 35 is rotatable around a shaft along

X direction, and of a plurality of pins provided on an outer peripherythereof (referred to as “outer peripheral pins 35T”), a pin locatedslightly upstream side of an uppermost pin is located in conveyance path21L (FIG. 5 ).

Introduction sprocket 35 is configured integrally with introductionsprocket drive gear 35G provided concentrically with the introductionsprocket. Introduction sprocket drive gear 35G meshes with firstintermediate gear 34 (FIG. 5 ). Therefore, when first intermediate gear34 rotates, introduction sprocket 35 rotates via introduction sprocketdrive gear 35G.

In FIG. 5 , positioning sprocket 36 is provided slightly downstreamabove first intermediate gear 34 (above a downstream side ofintroduction sprocket 35) and below conveyance path 21L. Positioningsprocket 36 is rotatable around a shaft along X direction, and anuppermost pin among a plurality of pins provided on an outer peripheryof the positioning sprocket is located in conveyance path 21L (FIG. 5 ).

Positioning sprocket 36 is configured integrally with positioningsprocket drive gear 36G provided concentrically with the positioningsprocket. Positioning sprocket 36 meshes with first intermediate gear 34(FIG. 5 ), and when first intermediate gear 34 rotates, positioningsprocket rotates in the same direction as introduction sprocket 35 viapositioning sprocket drive gear 36G.

In FIG. 5 , second intermediate gear 37 is located below a downstreamside of positioning sprocket 36. Second intermediate gear 37 isrotatable around a shaft along X direction and meshes with positioningsprocket drive gear 36G.

In FIG. 5 , ejection sprocket 38 is provided on the downstream side ofpositioning sprocket 36 and below conveyance path 21L (above secondintermediate gear 37). Ejection sprocket 38 is rotatable around a shaftalong X direction, and an uppermost pin among a plurality of pinsprovided on an outer periphery of the ejection sprocket is located inconveyance path 21L.

Ejection sprocket 38 is configured integrally with ejection sprocketdrive gear 38G provided concentrically the with the ejection sprocket.Ejection sprocket 38 meshes with second intermediate gear 37 (FIG. 5 ),and when second intermediate gear 37 rotates, ejection sprocket 38rotates in the same direction as positioning sprocket 36 (andintroduction sprocket 35) via ejection sprocket drive gear 38G.

As described above, in tape feeder 13 according to the present exemplaryembodiment, introduction sprocket 35, positioning sprocket 36, andejection sprocket 38 are configured to rotate in the same direction uponreception of a driving force of drive motor 31.

As described above, some of the pins provided on the outer periphery ofeach of the three sprockets (introduction sprocket 35, positioningsprocket 36, and ejection sprocket 38) constituting conveyance mechanism23 are located in conveyance path 21L. Each of introduction sprocket 35,positioning sprocket 36, and ejection sprocket 38 rotates with a pinengaged with feed hole KH of carrier tape CT on conveyance path 21L,thereby conveying carrier tape CT.

Introduction sprocket 35 rotates in a direction in which outerperipheral pin 35T on an upper end side is moved to the downstream side(arrow R1 illustrated in FIG. 5 ), thereby conveying carrier tape CT onconveyance path 21L in the downstream direction.

The rotation direction of introduction sprocket 35 is hereinafterreferred to as “tape advancing direction”. Positioning sprocket 36 andejection sprocket 38 also rotate in a direction in which the pins on theupper end side are moved to the downstream side in this manner, therebyconveying carrier tape CT in the downstream direction.

Introduction sprocket 35 receives carrier tape CT fed from draw-insprocket 22 b and conveys the fed carrier tape CT in the downstreamdirection. Positioning sprocket 36 conveys carrier tape CT received fromintroduction sprocket 35 in the downstream direction, and ejectionsprocket 38 conveys carrier tape CT received from positioning sprocket36 in the downstream direction, and ejects carrier tape CT from tapeoutlet 21T of frame 21.

Introduction sprocket 35 also rotates in a direction in which outerperipheral pin 35T on the upper end side is moved to the upstream side(a direction opposite to arrow R1 illustrated in FIG. 5 ), therebyconveying carrier tape CT on conveyance path 21L in the upstreamdirection (a direction toward the upstream side, i.e., a direction fromthe right side toward the left side of the sheet of FIG. 4 ). A rotationdirection of introduction sprocket 35 that conveys carrier tape CT inthe upstream direction in a manner as described above is hereinafterreferred to as “tape retracting direction”. Note that the rotation ofintroduction sprocket 35 in the tape retracting direction is performedwith an extremely small rotation amount in a situation where the headportion of carrier tape CT is not delivered from introduction sprocket35 to positioning sprocket 36 (to be described later).

In FIG. 5 , cover member 24 is provided to extend in Y direction aboveconveyance mechanism 23. Cover member 24 covers a downstream side upperportion of frame 21 from above, and has a function of pressing, fromabove, carrier tape CT conveyed on conveyance path 21L by the threesprockets (introduction sprocket 35, positioning sprocket 36, andejection sprocket 38) constituting conveyance mechanism 23.

In FIG. 5 and FIG. 6 (FIG. 6 is an enlarged view of region AE3 in FIG. 5), opening 24K opened upward is provided in an intermediate portion ofcover member 24 in Y direction. Component supply position 13P is set inopening 24K.

In FIG. 6 , FIG. 7 , FIG. 8 , and part (a) and part (b) of FIG. 9 ,cover tape peeling mechanism 25 includes wheel 40, three transmissiongears, and three peeling gears. The three transmission gears includefirst transmission gear 41 a, second transmission gear 41 b, and thirdtransmission gear 41 c, each of which is rotatable around a shaft alongthe X direction. The three peeling gears include first peeling gear 51,second peeling gear 52, and third peeling gear 53, each of which isrotatable around a shaft along the X direction.

In FIG. 7 , FIG. 8 , and part (b) of FIG. 9 , wheel 40 is provided at aposition opposed to introduction sprocket 35 across conveyance path 21L(above conveyance path 21L). Wheel 40 is made of a member having adisk-shape (disk-shaped member) expanding along YZ plane, and isprovided rotatably around a shaft along X direction.

A plurality of recesses 40B are provided on an outer periphery of wheel40 (FIG. 8 , and FIG. 10A and FIG. 10B). Recesses 40B are arranged at apitch corresponding to a pitch of outer peripheral pins 35T ofintroduction sprocket 35. In a state where introduction sprocket 35 isrotating, outer peripheral pin 35T is inserted into recess 40B of wheel40 from below to bring outer peripheral pin 35T into contact with aninner surface of recess 40B (FIG. 10A and FIG. 10B, and FIG. 11 which isa cross-sectional view taken along line V-V in FIG. 10A), therebyrotating wheel 40. At this time, a rotation direction of wheel 40 is adirection opposite to that of introduction sprocket 35 (arrow R2illustrated in FIG. 7 ).

As described above, in the present exemplary embodiment, wheel 40 thatis a disk-shaped member is rotatably provided, and is configured torotate in accordance with the rotation of introduction sprocket 35 as aresult of bringing outer peripheral pin 35T (FIG. 10A and FIG. 10B, andFIG. 11 ) of rotating introduction sprocket 35 into contact withrecesses 40B provided on the outer periphery of the introductionsprocket. Since introduction sprocket 35 and wheel 40 that generates arotation force for causing cover tape peeling mechanism 25 to work areprovided with conveyance path 21L provided therebetween, outerperipheral pin 35T of introduction sprocket 35 penetrates through feedhole KH of carrier tape CT to come into contact with recess 40B of wheel40, thereby transmitting rotation force. Such an arrangement eliminatesa need of a motor for causing cover tape peeling mechanism 25 to work,thereby enabling downsizing and cost saving of tape feeder 13.

In FIG. 10A, outer peripheral pin 35T of introduction sprocket 35engaged with feed hole KH of carrier tape CT on conveyance path 21Lpasses through feed hole KH from below. Therefore, even in a state ofbeing engaged with feed hole KH of carrier tape CT, outer peripheral pin35T can enter recess 40B of wheel 40, and introduction sprocket 35 canrotate wheel 40 while conveying carrier tape CT on conveyance path 21L(FIG. 10A and FIG. 10B).

As illustrated in FIG. 10B, in an inclined surface portion of a surfaceof outer peripheral pin 35T of introduction sprocket 35, a portion(referred to as “contact surface 35H”) in contact with an inner surfaceof recess 40B of wheel 40 is a flat surface. In addition, of the innersurface of recess 40B of wheel 40, a portion (referred to as “contactedsurface 40H”) with which contact surface 35H of introduction sprocket 35contact is also formed of a flat surface. As described above, sincecontact surface 35H contacting recess 40B of outer peripheral pin 35Tand contacted surface 40H with which outer peripheral pin 35T contactsout of the inner surface of recess 40B are both formed of flat surfaces,contact surface 35H and contacted surface 40H come into line contactwith each other (FIG. 10B).

When outer peripheral pin 35T of introduction sprocket 35 contacts theinner surface of recess 40B, first, a distal end side of contact surface35H of outer peripheral pin 35T comes into contact with contactedsurface 40H (see contact portion TB in FIG. 12A). With progress ofrotation of introduction sprocket 35, outer peripheral pin 35T andrecess 40B come relatively close to each other, so that contact portionTB between outer peripheral pin 35T and the inner surface of recess 40Bmoves from a distal end portion of outer peripheral pin 35T to a baseside (an inlet side of recess 40B) (FIG. 12A→FIG. 12B). As introductionsprocket 35 further rotates, outer peripheral pin 35T and recess 40B arerelatively separated from each other, so that contact portion TB movesto the distal end side of outer peripheral pin 35T again (FIG. 12B→FIG.12C).

In the present exemplary embodiment, since a portion (contact surface35H) of outer peripheral pin 35T contacting recess 40B and a portion(contacted surface 40H) of the inner surface of recess 40B contactingouter peripheral pin 35T are both flat surfaces, even when contactportion TB moves (FIG. 12A→FIG. 12B→FIG. 12C), contact surface 35H ofouter peripheral pin 35T and contacted surface 40H of recess 40Bmaintain the state of being in line contact.

Here, in a case where outer peripheral pin 35T of introduction sprocket35 has a conventional conical shape, and the inclined surface portioncontacting the inner surface of recess 40B is a curved surface, evenwhen the inner surface of recess 40B is a flat surface, outer peripheralpin 35T comes into point contact with the inner surface of recess 40B.In the present exemplary embodiment, as described above, outerperipheral pin 35T and the inner surface of recess 40B are not in pointcontact but in line contact, and outer peripheral pin 35T does notlocally contact the inner surface of recess 40B. Therefore, wear ofouter peripheral pin 35T can be reduced, and durability of not onlyintroduction sprocket 35 but also wheel 40 can be improved.

In FIG. 7 and FIG. 8 , and part (a) and part (b) of FIG. 9 , firsttransmission gear 41 a is provided concentrically with wheel 40. A slipclutch (not illustrated) is interposed between first transmission gear41 a and wheel 40. While transmitting a torque from wheel 40 side tofirst transmission gear 41 a, the slip clutch does not transmit a torquefrom first transmission gear 41 a side to wheel 40. Therefore, whenwheel 40 is driven by introduction sprocket 35, first transmission gear41 a rotates. However, even when first transmission gear 41 a is drivenby an external force (driven by manual manipulation of third peelinggear 53 to be described later), wheel 40 does not rotate.

In FIG. 7 and FIG. 8 , and part (a) and part (b) of FIG. 9 , secondtransmission gear 41 b meshes with first transmission gear 41 a on adownstream side of first transmission gear 41 a, and third transmissiongear 41 c meshes with second transmission gear 41 b on a downstream sideof second transmission gear 41 b. Therefore, when first transmissiongear 41 a rotates, second transmission gear 41 b rotates in a directionopposite to the rotation direction of first transmission gear 41 a, andthird transmission gear 41 c rotates in a direction opposite to therotation direction of second transmission gear 41 b (the same rotationdirection as that of first transmission gear 41 a).

In FIG. 8 , part (a) and part (b) of FIG. 9 , and FIG. 13 , firstpeeling gear 51 is attached to third transmission gear shaft 42 which isa rotation shaft of third transmission gear 41 c. Therefore, firstpeeling gear 51 rotates integrally with third transmission gear 41 caround an axis of third transmission gear shaft 42.

In part (a) and part (b) of FIG. 9 , and FIG. 13 , two first peelinggears 51 are provided side by side in the direction (X direction) ofthird transmission gear shaft 42. These two first peeling gears 51 areintegrally formed. Two second peeling gears 52 are located on adownstream side of first peeling gear 51, and provided side by side in Xdirection. Two third peeling gears 53 are provided side by side in Xdirection on third peeling gear shaft 53J located above first peelinggear 51 (part (a) and part (b) of FIG. 9 ).

In FIG. 7 , FIG. 8 , and part (a) and part (b) of FIG. 9 , one of twosecond peeling gears 52 meshes with one of two first peeling gears 51,and the other of two second peeling gears 52 meshes with the other oftwo first peeling gears 51. One of two third peeling gears 53 mesheswith one of two first peeling gears 51, and the other of two thirdpeeling gears 53 meshes with the other of two first peeling gears 51.When third transmission gear 41 c rotates, first peeling gear 51 rotatesin the same direction as that of third transmission gear 41 c, andsecond peeling gear 52 and third peeling gear 53 rotate in a directionopposite to the rotation direction of first peeling gear 51.

In FIG. 7 , FIG. 8 , and part (a) and part (b) of FIG. 9 , cover tapepeeling mechanism 25 further includes first guide member 61 and secondguide member 62. As illustrated in FIG. 14A and FIG. 14B, first guidemember 61 is made of a plate-shaped member along YZ plane, and isprovided between two second peeling gears 52 arranged in X direction. Anend surface located on an upstream side of first guide member 61 isguide part 61M formed of a curved guide surface. Guide part 61M islocated on a downstream side of an outer peripheral surface of firstpeeling gear 51, and has a shape recessed toward the downstream sidealong an outer peripheral shape of first peeling gear 51 (part (b) ofFIG. 9 ).

In FIG. 7 , FIG. 8 , part (a) and part (b) of FIG. 9 , FIG. 14A and FIG.14B, second guide member 62 has a shape like a table fork of three teethas a whole, and includes a base part 62P corresponding to a part of thethree teeth and main body part 62Q corresponding to a part of a handle.Second guide member 62 is installed in housing part 21S in an attitudein which base part 62P is directed to the downstream side and main bodypart 62Q is extended to the upstream side.

Base part 62P includes first locking part 62 a corresponding to a centertooth of the three teeth of the table fork, and two second locking parts62 b corresponding to two teeth on both sides of the three teeth. Firstlocking part 62 a is positioned between two first peeling gears 51. Twosecond locking parts 62 b are respectively located on both outer sidesof two first peeling gears 51, and are engaged with third transmissiongear shaft 42 from above (part (a) and part (b) of FIG. 9 , and FIG.14A).

When introduction sprocket 35 rotates in the tape advancing direction(arrow R1 illustrated in FIG. 5 and FIG. 7 ), wheel 40 rotated byintroduction sprocket 35 rotates in a direction of moving recess 40B ona lower end side to the downstream side, and accordingly, firsttransmission gear 41 a also rotates in a direction of moving lower endside teeth to the downstream side (arrow R2 illustrated in FIG. 7 andpart (b) of FIG. 9 ). Then, by the rotation of first transmission gear41 a, second transmission gear 41 b rotates in a direction of movingupper end side teeth to the downstream side, and third transmission gear41 c rotates in a direction of moving lower end side teeth to thedownstream side (the same direction as that of first transmission gear41 a).

When third transmission gear 41 c rotates in the direction of moving thelower end side teeth to the downstream side, first peeling gear 51rotates integrally with third transmission gear 41 c in a direction ofmoving lower end side teeth to the downstream side (arrow Rn illustratedin part (b) of FIG. 9 ). When first peeling gear 51 rotates in thedirection of moving the lower end side teeth to the downstream side,second peeling gear 52 and third peeling gear 53 meshing with firstpeeling gear 51 rotate in a direction of moving upper end side teeth tothe downstream side. Thus, the rotation directions of the threetransmission gears (first transmission gear 41 a, second transmissiongear 41 b, and third transmission gear 41 c) and the three peeling gears(first peeling gear 51, second peeling gear 52, and third peeling gear53) when introduction sprocket 35 rotates in the tape advancingdirection as described above are hereinafter referred to as “feedingdirection”.

On the other hand, when tape feeder 13 starts conveying new carrier tapeCT, introduction sprocket 35 may rotate in the tape retracting directionin order that first peeling gear 51 and second peeling gear 52 catchcover tape TT from new carrier tape CT. Wheel 40 rotated by introductionsprocket 35 rotates in a direction of moving recess 40B on the lower endside to the upstream side, and accordingly, first transmission gear 41 aalso rotates in a direction of moving the lower end side teeth to theupstream side (a direction opposite to arrow R2 illustrated in FIG. 7and part (b) of FIG. 9 ). Then, by the rotation of first transmissiongear 41 a, second transmission gear 41 b rotates in a direction ofmoving the lower end side teeth to the downstream side, and thirdtransmission gear 41 c rotates in a direction of moving upper end sideteeth to the downstream side (the same rotation direction as firsttransmission gear 41 a).

When third transmission gear 41 c rotates in the direction of moving theupper end side teeth to the downstream side, first peeling gear 51rotates integrally with third transmission gear 41 c in a direction ofmoving upper end side teeth to the downstream side (direction oppositeto arrow Rn illustrated in part (b) of FIG. 9 ). When first peeling gear51 rotates in the direction of moving the upper end side teeth to thedownstream side, second peeling gear 52 and third peeling gear 53 bothmeshing with first peeling gear 51 rotate in a direction of moving lowerend side teeth to the downstream side. Thus, the rotation directions ofthe three transmission gears (first transmission gear 41 a, secondtransmission gear 41 b, and third transmission gear 41 c) and the threepeeling gears (first peeling gear 51, second peeling gear 52, and thirdpeeling gear 53) when introduction sprocket 35 rotates in the taperetracting direction as described above are hereinafter referred to as“reverse direction”.

In FIG. 6 , FIG. 7 , and part (b) of FIG. 9 , an upper end portion ofthird peeling gear 53 protrudes upward from cover member 24. Operator OPcan manipulate a portion of third peeling gear 53 protruding upward fromcover member 24 toward the downstream side (i.e., in the feedingdirection), so that third peeling gear 53 and first peeling gear 51meshed with third peeling gear 53 can be rotated in the feedingdirection.

In FIG. 6 , FIG. 7 , part (b) of FIG. 9 , and FIG. 15 , tape pressingmember 64 extending in Y direction is provided at a position below covermember 24 in frame 21. Tape pressing member 64 is arranged aboveconveyance path 21L with a predetermined interval from conveyance path21L. An upstream side end portion of tape pressing member 64 is locatedon an upstream side of first peeling gear 51 (FIG. 15 ).

In part (b) of FIG. 9 and FIG. 15 , through hole 64H penetrating tapepressing member 64 in a thickness direction is provided at a positionnear the upstream side end portion of tape pressing member 64. Throughhole 64H is located substantially below a contact portion (meshingportion) between first peeling gear 51 and second peeling gear 52.Carrier tape CT conveyed on conveyance path 21L in the downstreamdirection by introduction sprocket 35 passes under tape pressing member64 from the upstream side end portion of tape pressing member 64 andreaches positioning sprocket 36.

In FIG. 15 , air blow-out port 71 opened upward toward conveyance path21L is provided at a position below through hole 64H provided in tapepressing member 64. Air blow-out part 73 is connected to air blow-outport 71 via air path 72 formed in frame 21. Air blow-out part 73 has afunction of blowing out air from air blow-out port 71 into conveyancepath 21L from below through air path 72.

In FIG. 15 , manipulation piece path 81 opened to conveyance path 21Lfrom below is provided at a position on a downstream side of airblow-out port 71 in frame 21. Manipulation piece path 81 is locatedbelow through hole 64H of tape pressing member 64. Manipulation piece 82is housed in manipulation piece path 81, and is movable in the up-downdirection in manipulation piece path 81. Manipulation piece 82 ismovable between a “protruding position” where an upper end thereofprotrudes into conveyance path 21L and a “non-protruding position” wherethe upper end thereof does not protrude into conveyance path 21L (housedin manipulation piece path 81). Manipulation piece 82 is energizedtoward the protruding position side by energizing spring 83.

While manipulation piece 82 is located at the protruding position in astate where carrier tape CT is not located immediately abovemanipulation piece path 81 (FIG. 15 ), the manipulation piece is pushedinto manipulation piece path 81 by carrier tape CT and located at thenon-protruding position in a state where carrier tape CT is locatedimmediately above manipulation piece path 81. In FIG. 15 , informationon the position of manipulation piece 82 in manipulation piece path 81is detected by manipulation piece position detector 84.

In FIG. 4 , manipulation and display part 26 is provided on an uppersurface of grip part 21G provided in an upper portion of frame 21 on theupstream side in a state of being exposed upward. Manipulation anddisplay part 26 is provided with buttons and the like for operator OP toinstruct controller 27 to perform necessary work, a lamp for givingvarious notifications to operator OP, and the like.

In FIG. 4 , controller 27 is provided in frame 21. Controller 27receives information input by operator OP from manipulation and displaypart 26, information indicating insertion of the head portion of carriertape CT into tape inlet 21K, the insertion being detected by insertiondetector 22 a, and other information. Controller 27 controls draw-inmotor 22 c, drive motor 31, air blow-out part 73, and the like based onthese pieces of input information.

Next, operation of tape feeder 13 will be described. For tape feeder 13according to the present exemplary embodiment, there are prepared a“manual mode” in which operator OP manually performs initial peeling ofcover tape TT from base tape BT, and an “automatic mode” in which theinitial peeling is automatically performed without depending on themanual work of operator OP. Operator OP can select a desired mode fromthe manual mode and the automatic mode by performing predeterminedmanipulation through manipulation and display part 26.

First, operation of tape feeder 13 conducted when operator OP selectsthe manual mode will be described. Regardless of whether operator OPselects the manual mode or the automatic mode, first, in a case ofloading carrier tape CT to tape feeder 13, operator OP processes thehead portion of carrier tape CT drawn out from reel RL such that a headportion of cover tape TT is longer than the head portion of base tape BTby a predetermined length (e.g., about several centimeters). Thus,formed protruding portion of cover tape TT from the head portion of basetape BT is hereinafter referred to as “cover tape protruding portion TS”(FIG. 2 ).

After performing the processing of forming cover tape protruding portionTS at the head portion of carrier tape CT, operator OP performsmanipulation of selecting the manual mode through manipulation anddisplay part 26. Then, the head portion of carrier tape CT at whichcover tape protruding portion TS is formed is inserted from tape inlet21K (FIG. 4 ) of frame 21. At this time, operator OP inserts carriertape CT into tape inlet 21K with cover tape protruding portion TSextending straight from a distal end of base tape BT.

When insertion detector 22 a detects the head portion of carrier tape CT(base tape BT) being inserted into tape inlet 21K, controller 27 causesdraw-in motor 22 c to work. As a result, draw-in sprocket 22 b rotates(arrow Ra illustrated in FIG. 4 ), and carrier tape CT is drawn intoconveyance path 21L.

When there is no preceding carrier tape CT in conveyance path 21L,carrier tape CT drawn into conveyance path 21L is delivered tointroduction sprocket 35 as it is, and when there is preceding carriertape CT in conveyance path 21L, carrier tape CT is delivered tointroduction sprocket 35 after waiting for the preceding carrier tape CTto be ejected from tape outlet 21T. When carrier tape CT is deliveredfrom draw-in sprocket 22 b to introduction sprocket 35, controller 27stops draw-in motor 22 c. As a result, draw-in sprocket 22 b is broughtinto a free rotation state in which conveyance of carrier tape CT byintroduction sprocket 35 is not hindered.

Controller 27 then stops drive motor 31 at timing when cover tapeprotruding portion TS of carrier tape CT conveyed in the downstreamdirection by introduction sprocket 35 reaches opening 24K of covermember 24. Then, the controller causes manipulation and display part 26to turn on a predetermined lamp and to urge operator OP to perform work(setting work) of setting cover tape TT on cover tape peeling mechanism25. After visually recognizing lighting of the lamp of manipulation anddisplay part 26, operator OP executes the setting work.

In the setting work, operator OP first draws out cover tape protrudingportion TS (i.e., cover tape TT) above cover member 24 from cover tapedraw-out portion 24H (FIG. 6 ) provided on the upper surface of covermember 24. Cover tape draw-out portion 24H is located on an upstreamside of opening 24K of cover member 24. After drawing out cover tape TTfrom cover tape draw-out portion 24H, operator OP moves carrier tape CTto the downstream side while pulling cover tape TT to the upstream side,so that a predetermined length of cover tape TT is peeled off from basetape BT.

In FIG. 7 , FIG. 13 , and FIG. 15 , insertion guide 24G extendingsubstantially horizontally toward the downstream side is provided at aposition of cover member 24 above first peeling gear 51. A space belowinsertion guide 24G is cover tape insertion port 24E. Operator OPinserts the head portion of cover tape TT from cover tape insertion port24E to abut the head portion of cover tape TT on a contact portion(meshing portion) between first peeling gear 51 and third peeling gear53, and then manipulates third peeling gear 53 with a finger to rotatein the feeding direction (arrow R3 illustrated in part (b) of FIG. 9 )so that a head portion of cover tape protruding portion TS is sandwichedbetween first peeling gear 51 and third peeling gear 53.

When the head portion of cover tape TT (cover tape protruding portionTS) is sandwiched between first peeling gear 51 and third peeling gear53, operator OP further rotates third peeling gear 53 in the feedingdirection to feed a part of cover tape TT into housing part 21S.Accordingly, when an appropriate tension is applied to cover tape TT,the setting work is finished (see FIG. 6 ).

In such setting work, when operator OP manipulates third peeling gear 53in the feeding direction, first transmission gear 41 a also rotates inthe feeding direction via first peeling gear 51, third transmission gear41 c, and second transmission gear 41 b. However, even when firsttransmission gear 41 a rotates, wheel 40 does not rotate by action ofthe above-described slip clutch provided between first transmission gear41 a and the wheel (first transmission gear 41 a idles with respect towheel 40), and carrier tape CT maintains a stationary state. Thus,operator OP can apply tension to cover tape TT by manipulating thirdpeeling gear 53 without affecting the position of carrier tape CT onconveyance path 21L.

When the setting work is finished, operator OP performs predeterminedmanipulation through manipulation and display part 26. When detectingthe predetermined manipulation being performed through the manipulationand display part, controller 27 causes drive motor 31 to restart theworking, thereby causing introduction sprocket 35 to intermittentlyrotate in the tape advancing direction. As a result, carrier tape CTadvances on conveyance path 21L, is delivered to positioning sprocket36, and then advances in the further downstream direction.

A pitch feeding interval of carrier tape CT corresponds to an intervalof pockets PK included in carrier tape CT. Therefore, when positioningsprocket 36 pitch-feeds carrier tape CT, each pocket PK stops atcomponent supply position 13P, and component BH in pocket PK ispositioned at component supply position 13P.

When introduction sprocket 35 intermittently rotates in the tapeadvancing direction and carrier tape CT is pitch-fed in the downstreamdirection, the gears of cover tape peeling mechanism 25 rotate inaccordance with the intermittent rotation of introduction sprocket 35,and the three peeling gears (first peeling gear 51, second peeling gear52, and third peeling gear 53) intermittently rotate in the feedingdirection. As a result, the head portion of cover tape TT is fed to theupstream side (inside housing part 21S), while carrier tape CT advancesto the downstream side, resulting in being gradually peeled off frombase tape BT.

As described above, component supply position 13P is located downstreamof cover tape draw-out portion 24H, which is the position where covertape TT is peeled off from base tape BT. Therefore, at a time pointwhere pocket PK storing component BH reaches component supply position13P, cover tape TT covering pocket PK is already peeled off from basetape BT, and component BH is exposed upward. Mounting head 14 thereforecan suck and take out component BH exposed from pocket PK at componentsupply position 13P by nozzle 14N.

Carrier tape CT (base tape BT) after pocket PK passes through componentsupply position 13P is delivered from positioning sprocket 36 toejection sprocket 38. Carrier tape CT delivered to ejection sprocket 38is further conveyed in the downstream direction by ejection sprocket 38to be ejected from tape outlet 21T to an outside of cover member 24(i.e., an outside of tape feeder 13) (FIG. 4 ). Since ejection sprocket38 is provided near tape outlet 21T, it is possible to reliably eject,from tape outlet 21T, carrier tape CT just before component shortage,and even carrier tape CT having a rear portion separated from engagementwith the pins of positioning sprocket 36.

First peeling gear 51 and third peeling gear 53 rotate in the feedingdirection in conjunction with the rotation operation of introductionsprocket 35 in the tape advancing direction. Therefore, cover tape TTpeeled off from base tape BT and sandwiched between first peeling gear51 and third peeling gear 53 is fed (ejected) into housing part 21S ascarrier tape CT is conveyed in the downstream direction. Cover tape TTfed into housing part 21S is then collected by operator OP.

As described above, in tape feeder 13 according to the present exemplaryembodiment, introduction sprocket 35, positioning sprocket 36, ejectionsprocket 38, first peeling gear 51, and third peeling gear 53 are drivenupon reception of rotational power of drive motor 31, and conveyanceoperation of carrier tape CT and feeding operation of cover tape TT tohousing part 21S can be performed by one power source (drive motor 31).

Next, operation of tape feeder 13 conducted when operator OP selects theautomatic mode will be described. After selecting the automatic modethrough manipulation and display part 26, operator OP inserts, into tapeinlet 21K of frame 21, the head portion of carrier tape CT on whichcover tape protruding portion TS is formed.

When insertion detector 22 a detects the head portion of carrier tape CT(base tape BT) being inserted into tape inlet 21K, controller 27 causesdraw-in motor 22 c to work. As a result, draw-in sprocket 22 b rotates(arrow Ra illustrated in FIG. 4 ), and carrier tape CT is drawn intoconveyance path 21L. Similarly to the case where the manual mode is set,when there is no preceding carrier tape CT in conveyance path 21L,carrier tape CT drawn into conveyance path 21L is delivered tointroduction sprocket 35 as it is, and when there is preceding carriertape CT in conveyance path 21L, carrier tape CT is delivered tointroduction sprocket 35 after waiting for preceding carrier tape CT tobe ejected from tape outlet 21T. Then, similarly to the case where themanual mode is set, when carrier tape CT is delivered from draw-insprocket 22 b to introduction sprocket 35, controller 27 stops draw-inmotor 22 c to bring draw-in sprocket 22 b into the free rotation state.

When the head portion of carrier tape CT (base tape BT) conveyed byintroduction sprocket 35 in the downstream direction reaches abovemanipulation piece 82, manipulation piece 82 energized by energizingspring 83 and positioned at the protruding position is pushed down bycarrier tape CT and displaced to the non-protruding position (FIG. 16A,arrow Y1 illustrated in the figure). In a case where the automatic modeis set, when manipulation piece position detector 84 detectsmanipulation piece 82 being displaced from the protruding position tothe non-protruding position, controller 27 switches operation directionof drive motor 31.

Introduction sprocket 35 rotating in the tape advancing directiontemporarily stops due to switching of the operation direction of drivemotor 31 and then rotates in the tape retracting direction (arrow RRillustrated in FIG. 16B). As a result, carrier tape CT is conveyedtoward the upstream side, and the three peeling gears (first peelinggear 51, second peeling gear 52, and third peeling gear 53) rotate inreverse directions (arrow Rr illustrated in FIG. 16B).

When the head portion of carrier tape CT (base tape BT) is positioned onan upstream side of manipulation piece 82 as carrier tape CT is conveyedtoward the upstream side, manipulation piece 82 is not pushed downwardby carrier tape CT, and thus returns to the protruding position by anenergizing force of energizing spring 83 (arrow Y2 illustrated in FIG.16B). When manipulation piece position detector 84 detects manipulationpiece 82 being returned to the protruding position, controller 27switches the operation direction of drive motor 31 again at timing whenthe head portion of cover tape protruding portion TS is located upstreamof air blow-out port 71 (FIG. 16B).

When the operation direction of drive motor 31 is switched, introductionsprocket 35 rotating in the tape retracting direction temporarily stopsand then rotates in the tape advancing direction (arrow R1 illustratedin FIG. 17A), and carrier tape CT is conveyed again toward thedownstream direction. When introduction sprocket 35 rotates in the tapeadvancing direction, each of first peeling gear 51, second peeling gear52, and third peeling gear 53 rotates in the feeding direction (arrow Rnillustrated in FIG. 17A).

After switching the operation direction of drive motor 31, controller 27causes air blow-out part 73 to work and causes air Air to blow out fromair blow-out port 71 into conveyance path 21L for a fixed period of time(FIG. 17A). As a result, when passing above air blow-out port 71, covertape protruding portion TS of carrier tape CT to be conveyed in thedownstream direction is blown up by the air blown out from air blow-outport 71. Then, cover tape protruding portion TS passes through throughhole 64H of tape pressing member 64 to move upward of tape pressingmember 64 (FIG. 17A).

When carrier tape CT with cover tape protruding portion TS moved upwardof tape pressing member 64 is conveyed in the downstream direction, thedistal end portion of cover tape protruding portion TS approaches, frombelow, the contact portion (meshing portion) between first peeling gear51 and second peeling gear 52 rotating in the feeding direction. Then,upon arrival of the distal end portion of cover tape protruding portionTS at the contact portion (meshing portion) between first peeling gear51 and second peeling gear 52, cover tape protruding portion TS issandwiched between first peeling gear 51 and second peeling gear 52(FIG. 17B).

As described above, when first peeling gear 51 and second peeling gear52 rotate in the feeding direction with cover tape protruding portion TSsandwiched between first peeling gear 51 and second peeling gear 52(carrier tape CT is conveyed in the downstream direction), cover tape TTis peeled off from base tape BT. Then, a state continues in which covertape TT is peeled off from base tape BT as introduction sprocket 35rotates in the tape advancing direction.

In consideration of a case where one blowing of air Air from airblow-out port 71 does not cause cover tape protruding portion TS to moveupward of tape pressing member 64 through through hole 64H, advancingoperation and retreating operation of carrier tape CT may be repeatedseveral times in such a manner as FIG. 18A→FIG. 17B-FIG. 18A before theprocessing proceeds from FIG. 18A to FIG. 18B.

Cover tape TT peeled off from base tape BT is fed upward while beingsandwiched between first peeling gear 51 and second peeling gear 52 thatrotate in the feeding direction. At this time, cover tape TT is guidedby guide part 61M of first guide member 61 to advance in a curved routealong an outer periphery of first peeling gear 51 toward a direction ofthe contact portion between first peeling gear 51 and third peeling gear53.

Specifically, in the present exemplary embodiment, guide part 61M offirst guide member 61 is configured to guide cover tape TT to move alongthe outer periphery of first peeling gear 51 in the curved route towardthe contact portion between first peeling gear 51 and third peeling gear53, cover tape TT being peeled off from base tape BT by first peelinggear 51 and second peeling gear 52.

As described above, in the present exemplary embodiment, first peelinggear 51 as a first rotation body and second peeling gear 52 as a secondrotation body that rotate in contact with each other serve as peelingparts that feed cover tape TT sandwiched therebetween to peel cover tapeTT from base tape BT. In addition, in the present exemplary embodiment,first guide member 61 is configured to guide cover tape TT so as to movealong the outer periphery of first peeling gear 51 toward the partbetween first peeling gear 51 and third peeling gear 53 (the contactportion between first peeling gear 51 and third peeling gear 53), covertape TT being peeled off from base tape BT by first peeling gear 51 andsecond peeling gear 52.

At start of conveying new carrier tape CT by tape feeder 13, when newcarrier tape CT is conveyed in the upstream direction in order thatfirst peeling gear 51 and second peeling gear 52 catch cover tape TTfrom carrier tape CT, first peeling gear 51 and third peeling gear 53rotate in the reverse directions. As a result, although a rear portionof cover tape TT is returned in a direction opposite to an ejectiondirection, at this time, the rear portion of cover tape TT moves in aroute different from the curved route guided by first guide member 61.Specifically, the rear portion of cover tape TT is conveyed along anupper surface of first guide member 61 by first guide member 61 andejected from cover tape insertion port 24E of cover member 24.

Cover tape TT (cover tape protruding portion TS) peeled off from basetape BT by first peeling gear 51 and second peeling gear 52 reaches thecontact portion between first peeling gear 51 and third peeling gear 53as a result of being guided by first guide member 61 so as to move alongthe outer periphery of first peeling gear 51. Then, after beingsandwiched between first peeling gear 51 and third peeling gear 53 thatrotate in the feeding direction along with the rotation of introductionsprocket 35 (FIG. 18A), the head portion of cover tape TT having reachedthe contact portion between first peeling gear 51 and third peeling gear53 is fed to housing part 21S and ejected into housing part 21S (FIG.18B).

As described above, in the present exemplary embodiment, first peelinggear 51 and third peeling gear 53 as a third rotation body which rotatein a contact state serve as ejection parts which eject cover tape TTpeeled off from base tape BT by first peeling gear 51 and second peelinggear 52 by sandwiching and feeding cover tape TT.

Here, as described above, first locking part 62 a of second guide member62 is positioned between two first peeling gears 51, and first guidemember 61 is positioned between two second peeling gears 52. Further, asillustrated in FIG. 15 , plate-shaped part 24R attached to third peelinggear shaft 53J which is a rotation shaft of third peeling gear 53 (orprovided as a part of cover member 24) is located between lower regionsof two third peeling gears 53. Therefore, it is possible to preventoccurrence of an operation trouble of tape feeder 13 caused by windingof cover tape TT (including cover tape protruding portion TS), which canbe easily deformed due to its small thickness, around the two gearsarranged in the X direction, or caused by cover tape TT entering betweenthe two gears or getting entangled.

As described above, in the present exemplary embodiment, first lockingpart 62 a of second guide member 62 is located between two first peelinggears 51 to serve as a first winding prevention part that prevents covertape TT from winding around two first peeling gears 51. First guidemember 61 is located between two second peeling gears 52 and serves as asecond winding prevention part that prevents cover tape TT from windingaround two second peeling gears 52. Plate-shaped part 24R is locatedbetween two third peeling gears 53 and serves as a third windingprevention part that prevents cover tape TT from winding around twothird peeling gears 53.

Here, it is assumed that immediately after a rear portion of carriertape CT getting near to component shortage passes through through hole64H, a head portion of subsequent carrier tape CT is inserted into tapeinlet 21K. In this case, there may occur a situation where in a statewhere the rear portion of cover tape TT being peeled off from precedingcarrier tape CT and completely separated from base tape BT thereof hasnot yet passed through the contact portion between first peeling gear 51and third peeling gear 53, manipulation piece 82 is pushed down by thehead portion of subsequent carrier tape CT that has advanced in thedownstream direction (FIG. 19A).

In such a situation, immediately after that, introduction sprocket 35 isrotated in the tape retracting direction (arrow RR illustrated in FIG.19B), so that the three peeling gears (first peeling gear 51, secondpeeling gear 52, and third peeling gear 53) rotate in the reversedirections (arrow Rr illustrated in FIG. 19B). As a result, firstpeeling gear 51 and third peeling gear 53 return cover tape TT beingsandwiched with the rear portion thereof as a head to a directionopposite to the ejection direction (direction toward housing part 21S).

However, when cover tape TT is returned by first peeling gear 51 andthird peeling gear 53, unlike time of peeling off cover tape TT, covertape TT is not guided by such a curved guide surface as guide part 61M,and thus cover tape TT advance substantially straight along a tangentialdirection of first peeling gear 51 and third peeling gear 53. For thisreason, the rear portion of cover tape TT returned from first peelinggear 51 and third peeling gear 53 does not return along the routethrough which the cover tape is fed by first peeling gear 51 and secondpeeling gear 52, but advances in a direction (specifically, asillustrated in FIG. 19B, a direction passing above first guide member 61toward cover tape insertion port 24E) different from a direction towardguide part 61M from between third peeling gear 53 and guide part 61M.

Specifically, in the present exemplary embodiment, guide part 61M isprovided that guides cover tape TT separated from base tape BT by firstpeeling gear 51 and second peeling gear 52 so as to advance in the routetoward the contact portion between first peeling gear 51 and thirdpeeling gear 53, and in a case where after the rear portion of covertape TT received by first peeling gear 51 and third peeling gear 53 fromfirst peeling gear 51 and second peeling gear 52 passes through guidepart 61M, cover tape TT is fed back, the rear portion of cover tape TTadvances in the direction different from the direction toward guide part61M from between third peeling gear 53 and guide part 61M. Therefore,even in a case where peeled off cover tape TT is returned in thedirection opposite to the direction at the time of peeling-off becausesubsequent carrier tape CT is loaded following preceding carrier tapeCT, cover tape TT does not return to guide part 61M, and thus does notflow back to conveyance path 21L of carrier tape CT. Therefore, it ispossible to prevent cover tape TT of preceding carrier tape CT frominterfering with peeling of cover tape TT of subsequent carrier tape CT.

As described above, in tape feeder 13 according to the present exemplaryembodiment, outer peripheral pin 35T of introduction sprocket 35 thatconveys carrier tape CT is brought into contact with recess 40B providedon the outer periphery of wheel 40, so that the wheel rotates inaccordance with the rotation of the introduction sprocket 35. Sincecontact surface 35H of outer peripheral pin 35T contacting the innersurface of recess 40B, and contacted surface 40H with which outerperipheral pin 35T contacts out of the inner surface of recess 40B areboth formed of flat surfaces, and contact surface 35H and contactedsurface 40H come into line contact with each other, outer peripheral pin35T does not come into point contact (do not locally abut) with theinner surface of recess 40B unlike a case where outer peripheral pin 35Thas a conical shape. Therefore, wear of outer peripheral pin 35T can bereduced, and durability of not only introduction sprocket 35 but alsowheel 40 can be improved.

Although the exemplary embodiment of the present disclosure has beendescribed in the foregoing, the present disclosure is not limited to theabove exemplary embodiment, and various modifications and the like canbe made. For example, the configuration of conveyance mechanism 23described in the above exemplary embodiment is an example, and otherconfigurations may be provided as long as carrier tape CT on conveyancepath 21L can be conveyed.

Further, each of the three peeling gears (first peeling gear 51, secondpeeling gear 52, and third peeling gear 53) constituting the peelingpart and the ejection part of cover tape peeling mechanism 25 may bechanged to another rotation body such as a roller member. In otherwords, the peeling part only needs to include the first rotation bodyand the second rotation body that rotate in the contact state, and theejection part only needs to include the first rotation body and thethird rotation body that rotate in the contact state.

The present disclosure is applicable to a component supply device thatconveys a component supply tape storing a component and supplies thecomponent to a component supply position.

What is claimed is:
 1. A component supply device that supplies acomponent to a component supply position using a component supply tapeincluding a base tape and a cover tape, the base tape having a storagepart storing the component, the cover tape being attached to the basetape to cover the storage part, the component supply device comprising:a frame including a conveyance path for the component supply tape; asprocket that is provided in the frame, includes a pin, and rotates withthe pin engaged with a feed hole of the component supply tape on theconveyance path to convey the component supply tape; and a disk-shapedmember that rotates in accordance with rotation of the sprocket when thepin of the rotating sprocket comes into contact with a recess providedon an outer periphery of the disk-shaped member.
 2. The component supplydevice according to claim 1, wherein a contact surface of the pincontacting an inner surface of the recess and a contacted surface withwhich the pin contacts out of the inner surface of the recess are bothflat surfaces, and the contact surface and the contacted surface comeinto line contact with each other.
 3. The component supply deviceaccording to claim 1, further comprising: a transmission gear driven bythe disk-shaped member; and a cover tape peeling mechanism driventhrough the transmission gear to peel the cover tape from the base tape.4. The component supply device according to claim 1, wherein the covertape peeling mechanism includes a peeling part that includes a firstrotation body and a second rotation body that rotate in a contact state,and sandwiches and feeds a cover tape to peel the cover tape from a basetape, an ejection part that includes the first rotation body and a thirdrotation body that rotate in a contact state, and sandwiches and feeds acover tape fed from the peeling part to eject the cover tape, and aguide part that guides a cover tape peeled from a base tape by thepeeling part to advance in a route toward a contact portion between thefirst rotation body and the third rotation body.
 5. The component supplydevice according to claim 4, wherein in a case where after a rearportion of a cover tape received by the ejection part from the peelingpart passes through the guide part, the ejection part feeds back thecover tape, the guide part guides the rear portion of the cover tapetoward a direction different from the route.
 6. The component supplydevice according to claim 4, wherein each of the first rotation body,the second rotation body, and the third rotation body includes a gear.7. The component supply device according to claim 2, further comprisinga housing part that houses a cover tape ejected by the cover tapepeeling mechanism.